They bumped the OpenGL version to 3.3 which is 9 years old. I don't know exactly what hardware you have but there's some that supports newer GL versions on Linux vs Windows, i.e the integrated GPU in Sandy Bridge hardware only goes up to 3.1 in the Windows driver but the Linux driver supports 3.3. AMD Linux drivers support 3.3 all the way back to HD2000 hardware from 2007.